Based on the information provided, it was impossible to confirm that this was a British romance film. However, if it was referring to the British film Before Sunrise, it was a 1995 film directed by William Eubank and starred Lily Tomlin and Paul Bettany. The movie centered around the innocent feelings between the male protagonist Chris and the female protagonist Lily. It told the story of their meeting on the university campus and gradually falling in love. At the beginning of the movie, Chris and Lily had just graduated from college and were about to go to bed. However, Chris had a dream that Lily had left him. After this dream, Chris realized that his feelings for her were no longer ordinary love, but deep love. The movie, Love Before Midnight, was a very touching love movie that told a sincere love story and was very popular with the audience.